1. Division of Rheumatology, Istituto G Pini, Italy
2. Department of Internal Medicine, University of Milan, Italy
3. Experimental Laboratory of Immunological and Rheumatologic Research, IRCCS Istituto Auxologico Italiano, Italy
4. Unità Operativa Ostetricia e Ginecologia, Fondazione Ospedale Maggiore, Milan, Italy